Prepare base for installation by removing unstable or unsuitable materials, compacting and grading the soil, draining or stabilizing weak or saturated soils and taking measures to prevent water penetration and migration of bedding sand.

Resurface an outside area with cobblestones, terracotta tiles, concrete or other materials.

Screed sand level to an even thickness, and recheck sand exposed to elements, raking and rescreeding if necessary.